Ivanhoe Company from time to time embarks on a research program when a special project seems to offer possibilities. In 2016, the company expends $327,000 on a research project, but by the end of 2016 it is impossible to determine whether any benefit will be derived from it.

The project is completed in 2017, and a successful patent is obtained. The R&D costs to complete the project are $117,000. The administrative and legal expenses incurred in obtaining patent number 472-1001-84 in 2017 total $17,400. The patent has an expected useful life of 5 years. Record these costs in journal entry form. Also, record patent amortization one (full year) in 2017.

In 2018, the company successfully defends the patent in extended litigation at a cost of $51,200, thereby extending the patent life to December 31, 2025. What is the proper way to account for this cost? Also, record patent amortization (full year) in 2018.